-LRB- CNN -RRB- -- Dutch media expressed concern Tuesday about the prospects of Joran van der Sloot getting a fair trial following his arrest in Peru over the death of a 21-year-old woman .

Peruvian authorities say that Van der Sloot has already confessed to killing Stephany Flores Ramirez and could be charged on Tuesday . If convicted of murder he could face up to 35 years in jail .

The case has attracted international attention because van der Sloot was twice arrested and released in connection with the disappearance of American teenager Natalee Holloway in Aruba in 2005 .

In a comment piece published on Tuesday morning before the alleged confession , Dutch newspaper Trouw warned that police and authorities in Peru were under `` overwhelming pressure '' from the media to condemn van der Sloot , as soon as possible , warning that his presumed guilt appeared to be a `` foregone conclusion '' which risked turning his case into a `` show trial . ''

It also criticized the `` openness '' of the Peruvian police in placing van der Sloot in front of television cameras wearing a bulletproof vest , warning that it could compromise the case against the suspect .

`` Showing the suspect as a trophy could seriously harm the investigation . It could influence witnesses before they are heard , '' said Trouw .

Trouw also criticized Dutch forensic psychology professor Corine de Ruiter who speculated in another Dutch newspaper , De Volkskrant , that van der Sloot displayed `` all the major features of a classic psychopath . ''

De Ruiter has not met van der Sloot and told De Volkskrant her suggestion that he may have a psychopathic disorder was based on analysis of `` books , images and interviews '' concerning the case .

She cited an interview he gave on Dutch television in 2008 following which he threw a glass of wine into the face of crime reporter Peter R. de Vries .

Psychopathic personality disorder is a chronic mental illness also known as antisocial personality disorder . Those with the condition `` typically have no regard for right and wrong '' and may be prone to violent behavior , according to MayoClinic.com .

De Ruiter told the newspaper that typical psychopathic characteristics included a lack of empathy and guilt , manipulative tendencies , pathological lying and narcissism .

`` Psychopaths have a certain flair . They have wit , and they can also be very charming and polite , '' de Ruiter said .

But Trouw , in the opinion piece published before van der Sloot 's alleged confession , said : `` What if he is still proven innocent ? On closer inspection , the 22-year-old Dutchman is just a suspect in an ` ordinary ' murder investigation . So he must be treated . Until the court has sentenced , after thorough deliberation . ''

That sentiment was echoed by the Web site of the English language Radio Netherlands Worldwide which voiced concerns about the amount of possible evidence which had already been made public .

It noted that van der Sloot was `` already a well-known figure in the United States , the Netherlands and in Aruba . ''

`` Generally , the Netherlands never interferes with legal processes in other countries , but there may well be reason to protest in this case , '' it said .

Radio Netherlands Worldwide said van der Sloot 's alleged confession over the killing of Flores was a `` surprise '' as van der Sloot had previosly refused to say anything about his alleged involvement .

`` For Peru , Joran van der Sloot is principally a matter of prestige , '' the Web site said . `` His rights and privacy are secondary to the country 's desire to show off to the world with its handling of the Stephany Flores murder case . ''

Matthijs Spits in Amsterdam contributed to this story .

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Dutch paper Trouw says van der Sloot case risks becoming a `` show trial ''

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Paper says Peruvian authorities ' `` openness '' could compromise trial

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De Volkskrant says van der Sloot displays `` psychopathic '' tendencies

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Radio Netherlands Worldwide says there could be reason to protest over the case